is urging doctors and government officials in england to set limits on the amount of time of children spend in front of digital screens. that includes computers and mobile phones. the study says children under 3 should only watch two hours of tv a day. researchers say too much screen time causes developmental and physical harm. >>> if you are holding out hope a real world jurassic park will one day open keep on dreaming. scientists say it's impossible because actual dinosaur dna is gone. the study comes after claims that genetic material from dinosaurs could still be used in cloning. the science journal "nature" reports that dna has a half- life of about 521 years so sorry, dino. you're not coming back. >> long gone. >>> 5:21. the sleeping giants are wide awake. who stepped up to lead the g- men to a big win in cincinnati. >> plus, it was an improbable ending in oakland. how the as managed to pull off a big win last night. ,,,,,,,,,,,,,,,,,,,, >>> a few showers around the bay area overnight. we're not done with the rain just yet. maybe some more thunderstorms, too. we'll talk about that co